Rotary internal-combustion engine



NAN. LONG.

ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILED IAN. LI, 1920. I Lmj@ Natemea NLM. 79 'N922 3 SHEETS-SHEET I.

EN Q L f t Mwa/I/LIZOI:

A. R. LONG.

ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILEDv IAN. 8. I920.

Patend Mar. 7, 192:2.

3 SHEETS-SHEET 2.

A. IL LONG.

ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILED IAN. 8, |920.

\ Patented Mar. 7, 1.922.

3 SHEETS-SHEET 3- unirsi stares rxr-NT rines.

ALBERT n. LONG, or nALLsron, VIRGINIA.'

ROTARY ENTERNALPCQMBUSTJIN ENGINE.

- incense.

Specification of Letters Patent.

Patented Mar. *57, 1922.

Application Itiled January 8, 1920. Serial No. 350,999.

. filed January 8, 1920; and the invention relates more particularly to the provision of'a blower device tor rotary internal 4combustion engines ot the two-cycle type whereby a unitorI-n draft of suliicient velocity will be supplied to the engine cylinders for purging the same of burnt gases whereby te perfect combustion and also to cool said cylinders in order that etlicient 'functioning of the en ine will be ensured.

lt is a so an object of my invention to provide a blower device which by reason of the arrangement ot air intake ports. in the engine cylinders will furnish the greatest amount of air possible to said cylinders.

Other objects will be in part obvious, and in art ointed out hereinafter.

11h order that the invention and the manner ot its application may be readily understood by persons skilled in the art, have toA in the accompanying illustrative drawings and in lthe detailed following description' based thereon set 'forth one embodiment or the invention.

ln these drawings: l

Figure 1 is a vertical longitudinal section through a rotary cylinder engine with 'the improved blower applied;

Figure 2 is a section taken at r1ght angles to Figure 1, on the line `2-.2 thereo'looking in the direction in which the arrows oint' p Fighre 3 isv a similar section taken en the line 3-3 of- Figure 1 looking in the direction in which the arrows point, and

Figure 4 is a fragmentary detail 1llustrating the arrangement of the blower or fan blades.

Having `more espec1al reference to the drawings, in connection with which like reference characters referto corresponding parts, 1 designates the base of the engine to lwhich a stationary crank-shari; 2 1s. se cured, said crank-shatt'bemg rormed with an extension 2', the purpose of which will be hereinafter described. A circular bear' ing 3 1s arranged upon the base concentric` of the crank-shaft and rotatably supports the crank-case 4 and the radially disposed cylinders 5 of the engine, which have pistons 6 of the sleeve valve type working therein and connected to the crank-shaft to permit of rotation' thereabout. Suitable fuel-intake and exhaust ports are formed in the several cylinders, the intake ports being controlled by properly timed valves. 7 of the piston type, working in valve cylinders 8 adjacent their respective, cylinders while the exhaust ports are controlled by the pistons of their c linders as set out in the heretofore mentioned copending application. Air intake ports 9 are formed about the inner ends of said cylinders in a manner to atordv the greatest possible portage area and are also controlled by the pistons of `their respective cylinders; these pistons being formed with circularly disposed ports 10 adapted to align with said air ports upon the finish or the working strokes of the several pistons, at which time, the cylinders exhaust ports are open, thereby allowing a purging current of air to pass from the inner ends of the cylinders, through the same, and then be discharged therefrom-with the burnt products of combustion by way of the exhaust ports. l

As means for forcing the, cooling and purging draft through the engine cylinders, l employ a form of rotary blower comprising an annular casing 11 carried upon the outer sides of the valve cylinders by way of ports 12, while the valve cylinders communicate with their respective engine cylinders through the air intake orts 9. A series of circularly disposed fan lades 13 are carried bythe inner sides of the casing. The casing is positioned concentrically of the crankshaft extension 2 being engaged with a circular bearing 14 similar to the bearing Sand also supported upon the stationary crank shaft. ositioned in and concentrically of the casing 11 is a hub- 15 having its inner and outer ends reduced and provided with bearings 16 adapted to rotatably `engage about the extension 2', said hub being secured against displacement with relation to v the extension 2 by means of a locking screw 17 turned into with its outer end as shown in the Figure 1. Spaced series et' circularlydisposed tan blades i8 are carried on, the

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sides of the hub and are arranged on the opposite sides of the blades 13 onthe casing 11. In this connection, it should be note that the fan blades -13 and 18 are disposed at opposite oblique angles, as illustrated 1n the Figure 2 in order that they will function to draw air from the atmosphere into the engine when rotated in the manner now to be described.

An internal ring gear 19 is supported in the'bottom of the casing 11 upon an annular upstanding flange 2() which is disposed in concentric relation to the bearing 14, while a pinion 21 is secured to the lower reduced end of the hub 15 and Iis adapted to be connqcted to and' driven yby said ring gearby means of an idler 22 mounted for rotationV upon a bracket 23 immovabl secured to the crank-shaft connection 2. l`hus, it will be understood that upon rotation of the ring gear with the casing 11 and the engine cylinders rotary motion in an opposite directhe crank-shaft 2. The fan blades 13 and 18- will also be rotated to draw air fronrthe atmosphere. At timed .intervals the sleeve valve type pistons 6 will align with the exhau'st ports of their respective cylinders and also, the air intake ports in these pistons will align with the air intalre ports 9 insaid cylinders at which time,va clear way for a cooling and purging draft of air,-will be provided, said air being supplied from the blower means by way of the port 12, and in passing through the cylinders will thoroughly scavenge or sweep the same clear of all burnt products of combustion in addition to cooling said cylinders in. order that the same will be maintained at temperatures Lanarte such as will causeefficient operation of the engine. It will be also appreciated that some of the blast of air through the cylinders will remain therein and will mix with the fuel supplied from the fuel supply means forl perfecting combustibility.

While I have shown my improved blower device applied to a design of engine peculiar to my invention described and claimed in a co-pending application for Letters Patent, it should be well .understood that.'` the device can be as advantageously used inconnection with other designs. of engines, some of which are now prevalent in the art, such as conditions or preference mayV dictate.

llt is further manifest that the construction and arrangement of myY invention may be subjected to various modifications, and there-` fore, such modifications as are within the scope of my claim, l consider within the spirit of 'my invention. 1

What I claim is: v i

1n combination with a multiple rotary cylinder engine, an annular upright casing carried by said cylinders adjacent their inner ends and communicable with the interiors of such cylinders, circularly disposed fan blades carried interiorly of the annular casing, an upright extension from the crank shaft of the engine, a hub loosely mounted on said extension and disposed concentrically of the annular casing, other circularly dis`v vposed fan blades carried on the peripheral surface of said hub arranged above and below said first fan blades, and means operable mitting rotary motion from the casing to said hub inan opposite direction to the rotation of. the former, whereby to supply drafts of purging air to the interiors of said cylinders at regular intervals. lln testimony whereof l aiix my signature 1n presence of two witnesses.

ALBERT R. LONG.

Witnesses:

Enna d. SHEEHY, h1. L. Mitts.;

-upon functioning of the engine for trans- 

